Peptide and peptide analog protease inhibitors

摘要

Methods of use of compounds and compounds for the treatment of disorders characterized by the cerebral deposition of amyloid are provided. Among the compounds are those of formulae I and II: I II in which R1 is preferably 2-methyl propene, 2-butene, cyclohexyl or cyclohexylmethyl; R2, R4, and R8 are each independently methyl or ethyl; R3 is preferably iso-butyl or phenyl; R5 is preferably iso-butyl; R6 is H or methyl; R7-(Q)n is preferably benzyloxycarbonyl or acetyl; Q is preferably -C(O)-; RB is preferbly iso-butyl; RA=-(T)m-(D)m-R1, is which T is preferably oxygen or carbon, and D is preferably a mono-unsaturated C3-4 alkenyl being more preferred; and X is preferably an alpha -ketoester or alpha -ketoamide or aldehyde.